CatFortress
Best SureFlap for Large Cats: Pet Door vs Pet Door Connect
For a bigger or broad-bodied cat, the larger Microchip Pet Door range is usually the place to start. The remaining choice is whether you want straightforward microchip access or connected app control.
The quick recommendation
Our two large-cat SureFlap choices
SureFlap Microchip Pet Door
The larger non-connected door is the sensible option for a broad or tall cat when you do not need app features.
- Larger opening than the Cat Flap range
- Microchip-controlled access
- No Wi-Fi, app or Hub required
- Fewer connected components to configure
SureFlap Pet Door Connect
The larger connected model adds compatible app-based controls and activity information to the Pet Door format.
- Larger physical opening
- Connected controls and activity data
- Compatible Hub required
- Linked door listing excludes the Hub
Pet Door vs Pet Door Connect
| Feature | Microchip Pet Door | Pet Door Connect |
|---|---|---|
| Primary reason to buy | Larger, simple microchip access | Larger access with connected controls |
| Designed around a larger opening | Yes | Yes |
| App features | No | Yes, with compatible setup |
| Activity information | No connected reporting | Connected activity features |
| Hub required | No | Yes |
| Hub included in linked listing | Not applicable | No |
| Best household | Fit and simplicity first | Fit plus remote visibility |
How to check whether your cat will fit
Do not choose based on breed name or body weight alone. A long, lean cat and a broad, compact cat can weigh the same but need different space through an opening.
Notice how your cat passes through an existing opening without crouching, twisting or catching the shoulders.
Measure the chest and shoulders gently while your cat is standing naturally. Do not force an anxious cat to remain still.
Consider the height of the lower edge, especially for older cats, cats with arthritis or those recovering from treatment.
Use the manufacturer’s current opening measurements for the exact model and allow comfortable clearance.
Large breeds still need individual measurement
Maine Coons, Norwegian Forest Cats, Ragdolls, Siberians and other larger breeds vary considerably. Breed labels can help you begin the search, but they cannot confirm fit. Adult size, body condition, coat, age and mobility all matter.
For a growing cat, consider likely adult size before making a permanent cut in a door or wall. If the cat is between sizes, prioritise comfortable passage rather than the smallest possible opening.
Installation can be the real deciding factor
- Existing cat flap: measure the cut-out itself; a larger outer frame does not reveal the opening dimensions.
- uPVC or composite doors: check whether the panel construction and reinforcement suit the selected installation.
- Metal doors: microchip reading and installation may require model-specific guidance or accessories.
- Walls: tunnel extenders and careful weatherproofing may be needed.
- Glass: consult a qualified glazier before purchasing. Toughened glass cannot simply be cut after manufacture.
When the smaller Cat Flap range may still be enough
Do not automatically buy the larger Pet Door because your cat is described as “large.” If your cat passes comfortably through the standard opening, the smaller range may require less modification to the property and gives access to options such as Standard, DualScan and Cat Flap Connect.
Physical fit comes first; then choose the access features your household actually needs.
Frequently asked questions
Is the SureFlap Pet Door only for dogs?
No. The larger Pet Door range is relevant to larger cats as well as compatible small dogs. Measure the individual animal and verify the manufacturer’s current sizing guidance.
Does Pet Door Connect include the Hub?
The Amazon listing linked in this guide is the door without the Hub. Bundles can change, so confirm the package contents before ordering.
Is Pet Door Connect physically larger than Cat Flap Connect?
They belong to different product formats. Pet Door Connect is the larger-opening model; confirm the exact current dimensions for both before choosing.
What is the best SureFlap for a Maine Coon?
The larger Microchip Pet Door range is the sensible starting point, but Maine Coons vary. Measure your individual cat and compare those measurements with the exact opening specifications.
Should I choose Connect just because it costs more?
No. Choose it only if the app and activity features solve a real need. The non-connected Pet Door may provide the same physical fit with a simpler setup.
Continue comparing SureFlap
See our best SureFlap buyer’s shortlist, the complete five-model comparison, or compare Standard vs DualScan.
Editorial note: this guide compares published product functions and practical fit considerations. It does not claim hands-on testing and does not replace veterinary, manufacturer or qualified installation advice.
Need the larger opening? Read our SureFlap Microchip Pet Door review for measurements, curfew mode and installation considerations.